A: 1. When recycling the 2-in-1 brush, press the locking button to pull it down and retract the brush;
![](https://xiaomiknowledge.blob.core.windows.net/image/3bae701e-0d35-ef11-8e4e-000d3aa0881e.png)
2. If the locking buckle is not pressed and forcefully pushed or pulled, it may damage the buckle structure and cause the two in one brush to lock loose.
![](https://xiaomiknowledge.blob.core.windows.net/image/3eae701e-0d35-ef11-8e4e-000d3aa0881e.png)